3 C-Band LNBF's On a Single 8' Dish

[PopcornNMore]

After reading threads like below I'm wondering in anyone sucessfully added 3 C-Band LNBF's to a single 8' dish and if so how well did it work?

http://www.satelliteguys.us/c-band-satellite-discussion/233198-adding-2nd-lnb-10ft-dish.html